How much current does an electric heater draw from a `220 V` line, If the resistance of the heater (when hot) is `50 Omega` ?

Explanation

Here, potential difference, `V = 220 V`
resistance of the heater, `R = 50 Omega`
Using Ohm's law, `I = (V)/( R) = (220 V)/(50 Omega) = 4.4 A`.